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CISA Adds Brotli and Adobe Commerce Flaws to Known Exploited Vulnerabilities Catalog

The U.S. Cybersecurity and Infrastructure Security Agency has added two vulnerabilities to its Known Exploited Vulnerabilities catalog after confirming active exploitation in the wild. CVE-2026-111497 affects Google’s Brotli data compression library and can lead to code execution, information disclosure, or denial of service when specially crafted compressed data is processed. The flaw impacts any software that incorporates the Brotli decoder for decompression tasks, prompting vendors to release updates. CVE-2026-48356 resides in the file upload functionality of Adobe Commerce and Magento, allowing attackers to exploit improper handling during upload operations. CISA issued the alert on October 27, 2026, urging organizations to apply patches immediately to mitigate ongoing attacks. Related advisories also reference Brotli fixes in PHP and other products that bundle the library.

Security NEXTTranslated from Japanese

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The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added two actively exploited vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog on October 27, 2026.

The first entry, CVE-2026-111497, affects Google’s Brotli data compression library. The flaw exists in the decompression routine and can be triggered by processing maliciously crafted compressed data, potentially resulting in arbitrary code execution, information leakage, or denial of service.

Because Brotli is widely integrated into other software for decoding tasks, multiple vendors have already issued updates to address the issue. Products that embed the vulnerable decoder are considered at risk until patched.

The second vulnerability, CVE-2026-48356, impacts the file upload processing logic in Adobe Commerce and Magento. Attackers can abuse the flaw to compromise affected e-commerce installations.

CISA’s action underscores that both vulnerabilities are being exploited in real-world attacks, requiring immediate remediation by organizations running the affected software.

Adobe CommerceMagentoCVE-2026-111497BrotliCVE-2026-48356
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